Tech
21 Power Engine 60, an open-backed 1x12, 60W powered extension cabinet
designed to be used with any guitar or bass preamplifier/direct
box/combo amplifier. It is not a standalone piece; however, it can be
combined with any discrete preamplifier. You don't have to tweak your
usual settings or presets. Just plug into the Power Engine and go. It
has a level control, 3-band active tone control, 1/4" input, and
balanced XLR input and output. You can daisy-chain any number of Power
Engine 60s together for the really big gigs. This ampliified cabinet is
perfect if you already use a processor that does amp modeling for you
and you don't want your amplfier to colour your tone further.

Tech 21 Power Engine 60 Specifications:

12" speaker

60W of power

Open-backed cab design

Level control and three-band active tone

Use as an extension for the Trademark and Bronzewood 60s

Use as a standalone fronted by any direct-recording device or preamp

Daisy-chain multiple Power Engines together for added power

Gives best results with Line 6 POD X3 Live and other high-end processors that include amp modeling.